Peptidyl-prolyl cis-trans isomerase F, mitochondrial

UniProtKB accession:  P29117

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UniProtKB description:  PPIase that catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides and may therefore assist protein folding (By similarity). Involved in regulation of the mitochondrial permeability transition pore (mPTP) (PubMed:8567677, PubMed:9309684, PubMed:9820802). It is proposed that its association with the mPTP is masking a binding site for inhibiting inorganic phosphate (Pi) and promotes the open probability of the mPTP leading to apoptosis or necrosis; the requirement of the PPIase activity for this function is debated (PubMed:8567677, PubMed:9309684, PubMed:9820802). In cooperation with mitochondrial p53/TP53 is involved in activating oxidative stress-induced necrosis (PubMed:8567677, PubMed:9309684, PubMed:9820802). Involved in modulation of mitochondrial membrane F(1)F(0) ATP synthase activity and regulation of mitochondrial matrix adenine nucleotide levels (PubMed:8567677, PubMed:9309684, PubMed:9820802). Has anti-apoptotic activity independently of mPTP and in cooperation with BCL2 inhibits cytochrome c-dependent apoptosis (PubMed:19228691).